Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 to 60 NM Marine Forecast
| Today...Southwest Winds Near 15 Knots, Becoming West To Northwest 10 To 15 Knots. Seas 2 To 3 Feet. Wave Detail: Southwest To West 2 Feet At 3 Seconds And East 2 Feet At 5 Seconds. Scattered Showers And Isolated Thunderstorms. |
| Tonight...Northwest Winds 10 To 15 Knots, Becoming Northeast. Seas 2 To 3 Feet. Wave Detail: Northwest 2 Feet At 4 Seconds And Northeast To East 2 Feet At 5 Seconds. Isolated Showers. |
| Tuesday...Northeast To East Winds 10 To 15 Knots. Seas 2 To 3 Feet. Wave Detail: Northeast To East 3 Feet At 4 Seconds And Northwest 2 Feet At 6 Seconds. |
| Tuesday Night...East Winds Near 15 Knots. Seas 3 To 5 Feet, Occasionally To 5 Feet. |
| Wednesday...East To Southeast Winds 10 To 15 Knots, Decreasing To Near 10 Knots. Seas 2 To 4 Feet, Occasionally To 5 Feet. |
| Wednesday Night...East To Southeast Winds Near 10 Knots. Seas 2 To 3 Feet. |
| Thursday...Southeast Winds 5 To 10 Knots. Seas 1 To 2 Feet. |
| Thursday Night...East To Southeast Winds Near 10 Knots. Seas 1 To 2 Feet. |
| Friday...Southeast Winds Near 10 Knots. Seas 1 To 2 Feet. |
| Friday Night...East To Southeast Winds 10 To 15 Knots. Seas 2 To 3 Feet. |
| Area Forecast Discussion National Weather Service Key West FL 439am EST Monday Feb 16 2026 Issued at 435am EST Monday Feb 16 2026 We have some activity in the coastal waters of the Florida Keys this morning following a spell of quiet weather. KBYX radar detects a couple lines of shallow showers moving through our southeast Gulf waters and western Straits of Florida. The northernmost of these lines is starting to scrape across the Lower Keys as it moves quickly to the east at near 20 knots. Just north of our CWA, our radar also notes the main line of convection ahead of a cold front diving along the south Florida coastline. Meanwhile, gentle to moderate southwest breezes prevail along the Reef waters having turned from the south overnight. Temperatures are warmer than previous nigheights with values in the lower 70s and dew points near 70 resulting in another humid start to the day. Today's big weather story is undoubtedly the weak cold front forecast to sweep over our area. This initial spurt of shallow convection will quickly sweep across our area this morning until it either exits or dissipates following sunrise. Minus any other pop up developments to follow, the next wave of rain will come with the main prefrontal line of convection around the late morning or early afternoon hours if it can hold itself together to make it to the island chain. Last night's 00z KKEY balloon sounding noted a decently moist low level environment below an inversion around 800 mb, but also included a good amount of dry air aloft. Therefore, we do not expect thunderstorms over land today but cannot entirely rule them out in the warmer waters of the Gulf Stream or out in the southeast Gulf where more energy associated with the main prefrontal line could force a few towers to develop. While there is not expected to be a surge of winds with this frontal passage, gentle to moderate southwest winds from this morning will veer to the northwest by the end of the day. While this front is not very strong, we will still see a brief cool down. Temperatures Tuesday morning are expected to fall into the mid 60s, just a few degrees below normal for this time of year. Highs will quickly recover back into the upper 70s with breezes returning back to the usual easterly direction as high pressure takes back control over southeast CONUS. From there into the extended forecast, a primarily dry and warming pattern takes over into the weekend with highs eventually making it back up to the 80s. The next cold front continues to be picked up by global models for the start of next week however, and still looks much stronger than today's passage. Will continue to monitor guidance solution trends for this feature for now, so stay tuned in the meantime. Marine Issued at 435am EST Monday Feb 16 2026 No watches, warnings, or advisories are in effect for the coastal waters of the Florida Keys. From synopsis, a low pressure system draped across the Eastern Seaboard will drag an associated cold front through the Keys coastal waters today. Moderate southwesterly breezes will veer northwesterly by tonight. No potent surge in breezes is expected with this front. Breezes may slacken slightly after the front before veering easterly on Tuesday. Light to gentle breezes will prevail through mid week while another high pressure system moves from the Carolinas into the western Atlantic. Climate On this date in Key West weather history, the record high for the date of 84F was set in 1927, with the record low 53F set more recently in 1991. NOAA Key West FL Office: Watches - Warnings - Advisories FL...None. GM...None. |
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